Sync. I come from Reddit and that's what my favorite client defaults to. It's not optimal, because of the reason you say. I am totally OK with new apps presenting users with an easy "one-click" choice of instance to make onboarding easy, but having one accepted default has this side effect. If I were to maintain a Lemmy app, I'd probably select the "default" instance for a new user by selecting one at random in an array of popular instances, and then offer the user to subscribe to the official community of my app (wherever instance it's on) to keep up. Maybe I can hit up the dev with some feedback on this on the official community.
And now, just like it ended up with Mastodon, I'll have to maintain multiple accounts for Lemmy. Such a good user experience, it will totally catch on…
Seriously. Accept this piece of criticism from someone new to the Fediverse. Being harsher on piracy than a fucking corporation and forcing users to migrate accounts left and right / have multiple accounts to be able to easily access content out of your Mastodon instance's niche and having to get around your instance defederating and blocking content you wanted to see is just abysmal UX. Are we supposed to have our content scattered around how many accounts? And for those who don't like mobile apps, at this point I can only use Sync (Lemmy) and Tusky (Mastodon) through my phone to browse the Fediverse for lack of a good option to maintain multiple accounts on desktop. Firefox containers are just overkill for this, but I welcome suggestions.
End rant, and sorry if it's a long-winded disorganized ramble. Is lemmy.ml good to get around this block?